online dictionary - answers.com

I used to use Dictionary.com as my default online dictionary, but from now on I'll switch to answers.com, not only provides the definition of words but also covers a million topics from reliable encyclopedias, websites. Also the website has two features that attract me. First it's the firefox plug-in. Those who use firefox may appreciate the usability of the function. The other one is the free download software, 1-Click Answers, which 'brings you instant information about any word on your screen'. Nice to use it.